Harvester cutter-bar.



I. T. ALFRED.

HARVESTER OUTTER BAR.

APPLIGATION FILED AUG. so, 1906.

Patented Mar. 22, 1910.

WZTZVESSES designates the knife-heel of the cutter-bar,

UNIT STTES ATENT FFIGE.

ISAAC THORNTON ALFRED, OF BLACKFOOT, IDAHO. v

HARiVESTER CUTTER-BAR.

Patented Mar. 22, 1910.

Application filed August 30, 1906. Serial No. 332,692.

952,? 79. Specification of Letters Patent.

downward inclination transversely of the knife-heel 5, as will be apparent, the knifebar being similarly inclined by reason of the introduction of a wedge-shaped or beveled center-plate 10 between its inner end and that of said knife-heel.

When the machine is in operation, the passage of the guard fingers (not shown), transversely across the several knife-sections will keep the edges of the latter continuously in sharpened condition, owing to the downward inclination of said knife-sections, such inclination being caused by the disposition of the rear ends of the sections against the downward and forward inclined surface 6, and by the interposition of the plate 10 between the knife-heel and the knife-bar, as above described.

What is claimed, is I A harvester cutter-bar comprising, in combination, a knife-heel having the outer part of its under face cut away to form a forward and downward inclined surface; a knifebar; a plurality of knife sections secured to the knife-bar and having their rear ends disposed against said surface; and a longitudinal wedge-shaped strip interposed between the knife-heel and the knife-bar, whereby the latter and said knife sections will be inclinled downwardly transversely of the knifehee.

To all whom it may concern:

Be it known that I, IsAAo THORNTON AL- rnnn, a citizen of the United States, residing at Blackfoot, in the county of Bingham, State of Idaho, have invented certain new and useful Improvements in Harvester Cuti ter-Bars; and I do hereby declare the foli lowing to be a full, clear, and exact descrip tion of the invention, such as will enable i others skilled in the art to which it appertains to make and use the same.

This invention relates to harvester cutterbars, the object being to so construct a device of that nature, that the knife sections of the bar will be automatically sharpened by the passage thereover of the guard fingers,when the machine is in operation.

The preferred embodiment of the invention is illustrated in the accompanying drawings, wherein,

Figure l is a perspective view of the improved cutter-bar. Fig. 2 is a side elevation of the same. Figs. 3 and 4 are transverse sections taken, respectively, on the lines 3-3 of Fig. 1, and 4-4: of Fig. 2.

Reference being had to said drawings, 5

upon whose inner end is formed a perforated ear of the ordinary type for the attachment of the pitman (not shown), the under face of the outer portion of the knife heel being cut away to form a forward and downward In testimony whereof, I aifix my signature, inclined surface, indicated by the numeral 6. in presence of two witnesses.

The knife sections 8, which are secured to ISAAC THORNTON ALFRED. the knife-bar 7, have their rear ends disposed Witnesses: a ainst said forward -and downward inclined W. EARL SMITH,

sdrface and will therefore be given a drop or JOHN I. STEWART. 

